1
2
3 /*
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
5 *
6 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
7 *
8 * Portions Copyright Apache Software Foundation.
9 *
10 * The contents of this file are subject to the terms of either the GNU
11 * General Public License Version 2 only ("GPL") or the Common Development
12 * and Distribution License("CDDL") (collectively, the "License"). You
13 * may not use this file except in compliance with the License. You can obtain
14 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
15 * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
16 * language governing permissions and limitations under the License.
17 *
18 * When distributing the software, include this License Header Notice in each
19 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
20 * Sun designates this particular file as subject to the "Classpath" exception
21 * as provided by Sun in the GPL Version 2 section of the License file that
22 * accompanied this code. If applicable, add the following below the License
23 * Header, with the fields enclosed by brackets [] replaced by your own
24 * identifying information: "Portions Copyrighted [year]
25 * [name of copyright owner]"
26 *
27 * Contributor(s):
28 *
29 * If you wish your version of this file to be governed by only the CDDL or
30 * only the GPL Version 2, indicate your decision by adding "[Contributor]
31 * elects to include this software in this distribution under the [CDDL or GPL
32 * Version 2] license." If you don't indicate a single choice of license, a
33 * recipient has the option to distribute your version of this file under
34 * either the CDDL, the GPL Version 2 or to extend the choice of license to
35 * its licensees as provided above. However, if you add GPL Version 2 code
36 * and therefore, elected the GPL Version 2 license, then the option applies
37 * only if the new code is made subject to such option by the copyright
38 * holder.
39 */
40
41
42 package javax.servlet.http;
43
44 import java.util.EventListener;
45
46
47
48
49
50 /**
51 * Causes an object to be notified when it is bound to
52 * or unbound from a session. The object is notified
53 * by an {@link HttpSessionBindingEvent} object. This may be as a result
54 * of a servlet programmer explicitly unbinding an attribute from a session,
55 * due to a session being invalidated, or due to a session timing out.
56 *
57 *
58 * @author Various
59 *
60 * @see HttpSession
61 * @see HttpSessionBindingEvent
62 *
63 */
64
65 public interface HttpSessionBindingListener extends EventListener {
66
67
68
69 /**
70 *
71 * Notifies the object that it is being bound to
72 * a session and identifies the session.
73 *
74 * @param event the event that identifies the
75 * session
76 *
77 * @see #valueUnbound
78 *
79 */
80
81 public void valueBound(HttpSessionBindingEvent event);
82
83
84
85 /**
86 *
87 * Notifies the object that it is being unbound
88 * from a session and identifies the session.
89 *
90 * @param event the event that identifies
91 * the session
92 *
93 * @see #valueBound
94 *
95 */
96
97 public void valueUnbound(HttpSessionBindingEvent event);
98
99
100 }
101
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